20181087717

素因数分解:

$3^1\times 7^2\times {\mathrm{137286311}}^1$

素因数の和:137286328

約数の個数: 12

約数和(自身を含む): 31301279136

約数和(自身を除く): 11120191419

約数列:

[1, 3, 7, 21, 49, 147, 137286311, 411858933, 961004177, 2883012531, 6727029239, 20181087717]

約数ペア:

[(1, 20181087717), (3, 6727029239), (7, 2883012531), (21, 961004177), (49, 411858933), (147, 137286311)]